Fix: dataset page enter key to save (#13035)

### What problem does this PR solve?

Fix dataset page enter key to save 
Fix the warnings and optimize the code.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/components/ragflow-avatar.tsx

@@ -101,7 +101,6 @@ export const RAGFlowAvatar = memo(
           }}
           className={cn(
             'bg-gradient-to-b',
-            `from-[${from}] to-[${to}]`,
             'flex items-center justify-center',
             'text-white ',
             { 'rounded-md': !isPerson },